Billie Joe Armstrong, from left, Tre Cool and Mike Dirnt of Green Day perform at the Global Citizen Festival in Central Park on Saturday, Sept. 23, 2017, in New York. Green Day announced Tuesday, Sept. 10, 2019, that it will have a joint 2020 summer stadium concert tour with Weezer and Fall Out Boy. The Hella Mega Tour is scheduled to visit 19 cities in the United States and one in Canada. (Photo by Greg Allen/Invision/AP)
Greg Allen
Greg Allen/Invision/AP

In one of the worst-kept secrets in recent memory, Green Day has announced its joint 2020 summer stadium concert tour with Weezer and Fall Out Boy.

The Hella Mega Tour is scheduled to visit 19 cities in the U.S. and one in Canada, it opens July 17 at Seattle’s T-Mobile Park and concludes Aug. 29 at Philadelphia’s Citizens Bank Park.

The tour is being produced by Live Nation and presented by the Harley-Davidson motorcycle company. The North American tour will be preceded by an eight-city tour of Europe that begins June 13 in Paris and concludes June 29 in Dublin.

The tour will follow the release of new albums by all three bands: Green Day’s “Father of it All,” due out Feb. 7; Fall Out Boy’s “Greatest Hits: Believers Never Die – Volume Two,” due out Nov. 15; and Weezer’s “Van Weezer,” due out on a yet to be specified date in May.

Fans who dug a little deeper discovered a “hidden” Instagram account, @hellamegatour. It features a video of Armstrong performing an acoustic version of Green Day’s “Wake Me Up When September Ends,” with the added lyric: “Wake me up on September 10th.” In the video, he is wearing a shirt with the Weezer logo, the letters “F.O.B.” and the words “Hella Mega.”

The abbreviated video performance ends abruptly when Green Day drummer Tre Cool grabs Armstrong’s guitar and smashes it to pieces. It’s a re-enactment of a memorable scene from the hit 1978 movie “National Lampoon’s Animal House,” in which John Belushi grabs a guitar out of the hands of former San Diego singer-songwriter Stephen Bishop and smashes it to pieces.

Tickets for the Hella Mega Tour go on sale Sept. 20 at 10 a.m. at ticketmaster.com. An online pre-sale for American Express card members begins at 10 a.m. Monday and continues through 10 p.m. Sept. 19.

The ska-punk band The Interrupters is set to open all the dates on the tour.